Benietsu, also known as Benitsu, performs as the Snake Woman in a freak show circus troupe, specializing in snake charming and reptile acts. She engages in sexual relationships with troupe members Akaza and Muchisute, though her advances toward circus owner Arashi are rejected due to his lack of interest in women. She participates in the abuse and sexual assault of the young orphan Midori alongside other troupe members, including restraining Midori, beating her with a cane, and taunting her during violent episodes. In one instance, Benietsu employs perceived voodoo powers to inflict physical pain on Midori, contorting her body before anally penetrating her with a snake while mocking her suffering and future prospects. Despite this cruelty, she occasionally displays limited protectiveness, such as intervening when Muchisute attempts unjustified excessive abuse. Her personality blends promiscuity, hedonism, and sadism; she derives pleasure from tormenting Midori and engages in sexual activities with humans and animals—particularly snakes and eels. However, she maintains ethical boundaries by refusing to involve Midori directly in sexual encounters with other troupe members. In the original manga and anime's conclusion, she remains with the circus after Arashi abandons the troupe. She later appears in Midori's hallucination alongside former troupe members, collectively laughing at her despair before vanishing. For the 2016 live-action adaptation, her characterization shifts: the explicit sexual assault of Midori is omitted, consistent with the film's reduced graphic content. This version depicts Benietsu more overtly defending Midori against other troupe members and explicitly wishing for Midori's happiness during their farewell. Her backstory lacks concrete details across all media, though one source suggests a long association with Arashi's circus since her youth.